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We are boldly exploring our unknown Ocean to excite interest and inform the wise stewardship of our planet.

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The Doldrums Fracture Zone
Our planet’s longest mountain range is located in the center of the Atlantic Ocean: the Mid-Atlantic Ridge. This submarine volcanic mountain chain stretches for more than 16,000 kilometers, shaping Earth’s geology where tectonic plates drift apart. As the plates separate, mantle material rises, partially melts, and generates magma that forms new oceanic crust. The movement of plates forms wrinkles and lines along the planet’s surface, known as fault zones, which tell the story of Earth’s tectonic history. These fault zones circulate water into the seafloor and through the crust, later releasing it with new chemical compositions— some of which feed deep-sea bacteria that fuel thriving ecosystems in the deepest, darkest parts of the Ocean. While chemosynthetic ecosystems are well documented along the ridge, little is known about what lives on the fault zones. The Doldrums Megatransform System is one of these fault zones formed where offset ridge segments are linked by transform faults as the Atlantic seafloor spreads apart. Here, tectonic plates scrape and slide past one another, creating fascinating geologic formations like fault scarps and sedimented basins, both of which can host areas of chemically altered seawater and deep-sea ecosystems. Dr. Aaron Micallef of MBARI (Monterey Bay Aquarium Research Institute) and the international team will travel to the Doldrums Fracture Zone to map and identify interesting geological features, and then use ROV SuBastian to visualize them. Key to their work will be The Childlike Empress AUV, which will both create high-resolution maps of the seafloor and use its sensors to sniff out interesting chemicals that indicate venting. This expedition marks the first time Schmidt Ocean Institute’s new AUV will be used for scientific research.
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In the coming years, our expeditions will explore understudied regions around all seven continents in our global Ocean.

Latest Expedition

See all

The Doldrums Fracture Zone
Our planet’s longest mountain range is located in the center of the Atlantic Ocean: the Mid-Atlantic Ridge. This submarine volcanic mountain chain stretches for more than 16,000 kilometers, shaping Earth’s geology where tectonic plates drift apart. As the plates separate, mantle material rises, partially melts, and generates magma that forms new oceanic crust. The movement of plates forms wrinkles and lines along the planet’s surface, known as fault zones, which tell the story of Earth’s tectonic history. These fault zones circulate water into the seafloor and through the crust, later releasing it with new chemical compositions— some of which feed deep-sea bacteria that fuel thriving ecosystems in the deepest, darkest parts of the Ocean. While chemosynthetic ecosystems are well documented along the ridge, little is known about what lives on the fault zones. The Doldrums Megatransform System is one of these fault zones formed where offset ridge segments are linked by transform faults as the Atlantic seafloor spreads apart. Here, tectonic plates scrape and slide past one another, creating fascinating geologic formations like fault scarps and sedimented basins, both of which can host areas of chemically altered seawater and deep-sea ecosystems. Dr. Aaron Micallef of MBARI (Monterey Bay Aquarium Research Institute) and the international team will travel to the Doldrums Fracture Zone to map and identify interesting geological features, and then use ROV SuBastian to visualize them. Key to their work will be The Childlike Empress AUV, which will both create high-resolution maps of the seafloor and use its sensors to sniff out interesting chemicals that indicate venting. This expedition marks the first time Schmidt Ocean Institute’s new AUV will be used for scientific research.
Read More

From grants for caregivers to an artist-at-sea residency, our programs strive to deepen knowledge and inspire a connection with our planet’s life support system.

Latest Expedition

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The Doldrums Fracture Zone
Our planet’s longest mountain range is located in the center of the Atlantic Ocean: the Mid-Atlantic Ridge. This submarine volcanic mountain chain stretches for more than 16,000 kilometers, shaping Earth’s geology where tectonic plates drift apart. As the plates separate, mantle material rises, partially melts, and generates magma that forms new oceanic crust. The movement of plates forms wrinkles and lines along the planet’s surface, known as fault zones, which tell the story of Earth’s tectonic history. These fault zones circulate water into the seafloor and through the crust, later releasing it with new chemical compositions— some of which feed deep-sea bacteria that fuel thriving ecosystems in the deepest, darkest parts of the Ocean. While chemosynthetic ecosystems are well documented along the ridge, little is known about what lives on the fault zones. The Doldrums Megatransform System is one of these fault zones formed where offset ridge segments are linked by transform faults as the Atlantic seafloor spreads apart. Here, tectonic plates scrape and slide past one another, creating fascinating geologic formations like fault scarps and sedimented basins, both of which can host areas of chemically altered seawater and deep-sea ecosystems. Dr. Aaron Micallef of MBARI (Monterey Bay Aquarium Research Institute) and the international team will travel to the Doldrums Fracture Zone to map and identify interesting geological features, and then use ROV SuBastian to visualize them. Key to their work will be The Childlike Empress AUV, which will both create high-resolution maps of the seafloor and use its sensors to sniff out interesting chemicals that indicate venting. This expedition marks the first time Schmidt Ocean Institute’s new AUV will be used for scientific research.
Read More

Experience the wonder of our global Ocean via immersive galleries of art, scientific discoveries, and film.

Latest Expedition

See all

The Doldrums Fracture Zone
Our planet’s longest mountain range is located in the center of the Atlantic Ocean: the Mid-Atlantic Ridge. This submarine volcanic mountain chain stretches for more than 16,000 kilometers, shaping Earth’s geology where tectonic plates drift apart. As the plates separate, mantle material rises, partially melts, and generates magma that forms new oceanic crust. The movement of plates forms wrinkles and lines along the planet’s surface, known as fault zones, which tell the story of Earth’s tectonic history. These fault zones circulate water into the seafloor and through the crust, later releasing it with new chemical compositions— some of which feed deep-sea bacteria that fuel thriving ecosystems in the deepest, darkest parts of the Ocean. While chemosynthetic ecosystems are well documented along the ridge, little is known about what lives on the fault zones. The Doldrums Megatransform System is one of these fault zones formed where offset ridge segments are linked by transform faults as the Atlantic seafloor spreads apart. Here, tectonic plates scrape and slide past one another, creating fascinating geologic formations like fault scarps and sedimented basins, both of which can host areas of chemically altered seawater and deep-sea ecosystems. Dr. Aaron Micallef of MBARI (Monterey Bay Aquarium Research Institute) and the international team will travel to the Doldrums Fracture Zone to map and identify interesting geological features, and then use ROV SuBastian to visualize them. Key to their work will be The Childlike Empress AUV, which will both create high-resolution maps of the seafloor and use its sensors to sniff out interesting chemicals that indicate venting. This expedition marks the first time Schmidt Ocean Institute’s new AUV will be used for scientific research.
Read More

The Secret Life of Bubbles

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“Wait, stop, back up! There were bubbles back there!”

With a cry and dramatic gesture to the screen, GEOMAR scientist and shipboard bubble expert Jens Greinert

“Trust me, I’ve got a sixth sense for bubbles,” Jens assured us, or more specifically, ROV SuBastian's pilot. And sure enough, after we performed the delicate navigation involved to make the ROV do a U-turn 1,500 feet below the surface, there they were - a silvery stream of bubbles wobbling up from the seafloor.

In a real sense, this is what we came for: These bubbles contain the methane coming from the seafloor at those seep environmentsThe BubbleBox
The BSizing Things Up
So why are we looking at bubbles in such detail?

“The biggest reason is to help figure out how much gas is coming out of the seeps,” said Tim. “That’s one of the main goals of this cruise.”

The information from the Bubble Box will then be paired with hydroacoustic data from an echosounder onboard R/V Falkor to give an idea how much gas is coming out, not just at a particular moment, but also over time. The hydroacoustic data gives us the information on the stream of bubbles, and the Bubble Box gives us the particulars on the bubbles within the stream.

But the Bubble Box also sheds light on a whole host of other fascinating aspects of bubbles that Jens was only too happy to describe.

How Long Does a Bubble “Live?”
When you blow a bubble under the pool, how long does it last? Until it reaches the surface and pops, right? What if the source of the bubble is not just a few feet below the surface, but instead hundreds or even thousands of feet down?

“The general rule is that if a methane bubble starts more than 100 meters (328 feet) below the water surface, its chances of making it to the surface are very slim,” said Jens. “So down here, at four hundred, five hundred meters, or eight hundred meters even, there’s almost no chance the bubble will make it to the surface.”

But what happens to it? Mostly, the gas of the bubble dissolves into the water. As the methane bubble pops out of the seafloor, it represents a super-high concentration of methane close to the seafloor, while the surrounding ocean water has a much lower concentration of methane.

“The water and bubble methane concentrations are not in a chemical equilibrium,” explains Jens. “Immediately, the ocean starts trying to rectify this imbalance by dissolving the methane bubble into the ocean water.”

There are factors that can change how long the bubble dissolution takes. The larger the bubble, the longer it lasts. Another factor that can change how fast bubbles dissolve is a protective barrier around the bubble.

Image shows animated gif of bubbles rising through Bubble Box

Image shows a bubble hovering in front of laboratory instruments